Speed-indicator.



PATENTED APR. 16,1907.

T. W. PLORY.

SPEED INDICATOR.

APPLICATION FILED JANA. 1906.

2 SHEETS-SHEET 1.

INVENTOR M Wm W mmss'ses ATTORNEYS Tu: lvonkls FETER5 co., wasmumon. a. c.

PATENTED APR. 16, 1907.

T. W. PLORY. SPEED INDIGATOR.

APPLICATION FILED JANA. 190s.

2 SHEETS-SHEET 2 gri l/4k INLENTOR V UMX M W WITNESSES lad/40,; (d/h AT ORNEW ms mamas PETERS co, M More THOMAS VVASS FLORY, OF LONDUN, ENGLAND.

SPEED INDiCATOR.

Specification of Letters latent.

.atented April 16, 1907.

Application filed il'auuary 4, 1906. Serial No. 294,580.

To all whom, it TIT/my concern/.-

Be it known that I, THOMAS Kiss From, a SUbJQCt of the King oi Great Br in and Ireland, residing T08 l i atton Garden, in

applicable to speed-indicators for other purposes such, for instance, as for indicating the speed oi? stationary engines.

The speed-indicators uponwhich. the improvements according to my invention based are those in which an indicating device, such as an index-finger or pointer, is driven from the object whose speed is to be indicated (one of the wheels of a motor-car, for example) for a predetermined period of time, and such speed-indicators have been. 3T0- vided with clockwork which is brought into action only at the same time the indexiinger or pointer, the movement of the seid clockwork stopping as soon as it stops the movement of the index-finger or pointer after the lapse of the predetermined period oi. time but i provide mechanism such that the clockwork continues in operation for indicating time or for other purpose whether said. index-finger or pointer be in operation or not, and therefore I combine in one device a the 1 work or with a train oi gear-wheels or equivalent retz ding device will prevent for a predetermined time the locking of the wheel driving the index-finger or pointer, so that during that; time the i11dex-finger or pointer will-be moved to an extent corresponding 1 with the speed being measured and after the lapse oi the predetermined tune the said wheel will be again locked. The usual or any suitable device is used to bring the pointer back to zero. 7

i will describe, with reference to the accompanying drawings, constructions in accordance with my invention, premising that i do not limit myself to the precise details.

Figure of the accompanying drawings shows, with part oi the dial broken away, an arrangement according to my invention applied, for example, to a speed-indicator for a motor-car, from which its use for other speed indicating will also be understood; and Fig. 2 is a modification, as hereinafter described.

l is a case, (which may be similar to that of a watch or carriage-clock, for example) and 2 is a plate in the said case, beneath which plate is arranged the clockwork. (Not shown in the drawings.)

is a dial which besides being marked. with the hours and minutes is also provided with divisions indicating miles, kilometers, or other convenient units of dist ancc.

i is a pinion in the said case, driven coniiill'lUOUSlY by a shaft or flexible rotating speed-indicator and clocluvork for indicating 1 time or for other purpose requirmg contmuwheels oi the vehicle and provided with an ous movement.

According to my invention i employ clockwork with a dial and hands, as in a clock or watch, and in the same casing I employ gearing driven from the wheel or the like whose speed is to be indicated and actuating an indicating device, such as an indcxfinger or pointer, moving over a dial or ring marked with divisions to indicate speed, the

7 said gear being provided with a frictional or equivalent device which when the wheel i'or driving the index-finger or pointer is free will conve motion from the rotatin body to the I index-finger or pointer, but which will not convey such motion. when the said wheel is wvhich. by then being engaged with the clockmen-iher, such as a flexible metal cable, rorated in any suitable manner by one of the end. piece to be inserted in the squared. recess in the axis of the said pinion 4. The said. pinion 4 gears with. a toothed. bevel-wheel 5, 'l'rictiorally held by a spring-plate 45 against a second toothed wheel 6, gearing with a pinion 7, the arbor of which carries the speed-indicating pointer Through the hub oi the last-named pinion 7 pass the arbor oi the hour-hand and the socket carrying the minute-hand oi the clock mechanism. The said pinion 7 gears with a toothed sector 9, pivoied 10 to the aforesaid plate 2 and provided. with a pin 11 or a shoulder with which a projection 12 can be brought into contact, the said projection 12 being at one end of a lever 13, pivoted. at 14 andsubjected to the action of a spring 15 and acted on by a push-pin 16, so that when the saidv lever 13 is operated bv pressing the a spring 22 pressing on the pin.

push-pin 16 in the direction of the arrow L a projection 17 on the other end of the lever 13 is caused to come into contact with a pin 18 on a second. toothed sector 19, gearing with a toothed wheel 21, the said sector 19 being moved in the direction of the arrow A by ,8 on the said sector 19. The said toothed wheel 2], is mounted loosely on one of the arbors oi the clockwork-wheels arranged. 1Cl0\\' the aforesaid plate 2, but is connected to this arbor by spring-pawls 23 on springs 24. and. engaging a second ratchet-wheel 25, fixed to the said arbor, so that the said toothed wheel 21 can be turned in either direction on the said arbor. The sector 19 carries a detent 26, which is caused to with a ratchet-wheel 27, fixed to or formed. with the pinion 7,- carrying the index-linger 8, with which pinion gears, as aforesaid, the first-named sector 9 and the wheel 6, which is in frictional contact with the wheel 5, driven by the pinion conveying motion from the vehicle-wheel. hen the push-pin 16 is pressed in for the purpose of starting the indicating mechanism, the end 17 of the lever 13 by pressing on the pin 18 on the second sector 19 turns the said sector on its pivot 20 in the direction oi" the arrow B, so as to disengage the detent 26 from the ratchetwheel 27 011 the arbor oi the index-linger and rotate the wheel 21, the pawls 23 riding over the teeth of the ratchet-w heel 25 to a greater or lesser extent, according to the ei'tent of rotation given to the sector 19, and this extent oi rotation can be regulated by adjusting the end 1.7 of the lever 13, for which purpose the said end 17 is made separate from the main. portion of the lever 13 and is connected thereto by a center pin or screw 17 and slot-an'd-screw connection 28 or otherwise, so as to permit of the adjustment and fixing of the said end 17. sure on the push-pin 16 released, the sector 19, under the action of the spring 22, is returned to its former position, and the pawls 23 on the wheel 21 by their engagement with the teeth of the ratchet-wheel 25 impart auxiliary power to the clockwork.

hen no speed indication is required, the detent 26, carried on the sector 19, is engaged with the ratchet-wheel 27 on the arbor of the index-finger and the ratchet-wheel 25 will be rotated by the clockwork in the direction Of the arrow 1), the ratchet-teeth riding over the pawls 23 and the wheel 21 being stationary. The pinion 1, driven as aforesaid, from one of the vehicle-wheels, simply rotates the wheel 5, which it drives, without this wheel causing the next wheel 6 to rotate, the ind ex-linger remaining stationary at the point of the dial corresponding to the speed recorded in the last observation made with the indicatoror at zero, as the case may be.

To ascertain the speed at which the vehicle When the presmoving, the push-pin 16 is pressed. in the direction of the arrow L, thereby causing the releasing-lever 13 to turn on its pivot '14; against the action of its spring 15, and the end 17 of the lever 13 will act on the pin 18 on the aforesaid secoinl sector 19 so as to disengage the detent 26 from the teeth of the ratchet-wheel 27 on the arbor oi" the indexlinger, while the projection 12 of the lever 13 by pressing on a pin. 1.]. on the iirst-nan'ied sector 9 rotates, through the pinion 7, the said sector 9, thereby bringing the indexiinger back to zero. The push-pin 16 being .rel ased, the second sector 11) being in. gear with its wheel 21, and the detent 26, carried by the sector 19, being free 01' the wheel 27 on the arbor ol the index-linger, the said wheel 27 is turned by the wheel 5 through. the pinion 7 and actuates the index-linger 8 to indicate on the dial 3 the speed 01. the vehicle, the second sector 19 being turned by its spring 22 in the direction of the arrow A at a rate determined by the rate at which the clockwork drives the second ratchet-wheel 25 (which is now engaged. by the pawls with the toothed wheel 21 engaged with the said second sector 19) until the detent 26 again engages the teeth of the ratchet-wheel 27 on the arbor oil the index-linger, when the movement oi the index-finger is arrested at a division on the dial which indicates the speed at which the vehicle running, the divisions and the intermediate mechanism between the vehiole-wheel and the pinion 7 on the arbor of the index 'linger being proportioned .in accordance with the diameter oi the vehicle-wheel and the time which. the second sector 19 takes to accomplish its stroke in the direction. of the arrow A.

As the toothed wheel 21, which in ind icaling becomes engaged with the second ratchetwheel, is loose on the arbor oi the said ratchetwheel 25, the said toothed wheel 21 can rota-te imlependently oi the ratchet-wheel 25 in the direction opposite to that in. which it turns while the indexdinger is moving to indicate speed, and therefore it by inadvertenee the push-pin 16 should be pushed inward while an ii'idication is being e'l'l ected back pressure on the clocluvork is lneventml.

The speed-indicating mechanism may be used without the time-indicating mechanism or the necessity for any spring-barrel by gearing the toothed wheel 21 with a train 01' wheels 29 or equivalent retarding device arranged to present s'u'llicient resistance to retard the rotation 01: the said toothed wheel 2.1 and bring the detent 26 into engagenmnt with the wheel 27 on the arbor oi the index- "linger alter a certain lapse of time say, for

example, one minute-and thereby stop the index-finger at the division on the dial which second sector 19, which gears with the wheel 21, is made in two parts, one part 19 earr 'in g the teeth and being kept in contact witn the other part 30 by a screw 31 passing through a radial slot 32 in the part 19 and screwing into the part 30, the part 19 bein to slide on the said screw 3 1, it pin 33 is tixed to the inner side and near the other end oi the part 19 of the sector and passes through a radial slot 34 in the part 30 an d bears agai a curved projection 35 on the plate 2, said. pin 33 being pressed agaii'ist the projection by a spring 36, fixed to the part 30 ot the sector and. pressing against a pin 37 on the part 19 of the sector, so taat when the parts 19 and 30 oi the sector move in the di rection of the arrow A and. the pin 33 passes otl the curved projection 35 the spring 36 moves the part 19 of e sector radially, so as to disengage the teeth thereon from the wheel 21, and. at t e same time a projection 38 on the part 30 ofthe sector engages between two teeth of the w izeel 6, whien drives the index-"finger, and so stops its movement.

hen by pressure on the posh-pin 16 the projection 17 on the low r end of the releas ing-lever 13 is cansed to come into contact with the tail 39 of the part 30 oil the sector, the sector as whole (consisting of the parts 19 and 30) will be moved in the drection of the arrow B for releasing the speed-imlicating gear, the part 19 of the sector being ort of gear with its wheel 21, until the aforesaid pin 33, which is n ow at the back of the aforesaid projection. 35, meets a spring 40 and leaves the said projection 35, whereiipon the said spring 40 moves the part 19 ot the sector into engagement withits wheel 2] so that the sector on its return movement under the action of its spring will rotate the said wheel 21 in the direction ol the arrow D and at the rate at which the ratchet-wl'ieel 25 is rotated by the clockwork until the nose 38 on the part 30 ot the sector engages the teeth of the wheel 6, which drives the index linger and stops the movement of the said index 'linger 8, which then indicates on the dial the speed at which the vehicle is running.

The device for starting the clockwork may be other than the pnsh-pin 16. For exampie, the index-finger 1n ay be started bv the movement of the vehicle-wheel In Fig. 1 is shown an arrangement for this purpose, wn ich is as follows: On the shalt carrying tle wheels 5 and 6 is loosely mounted in close proximity to wheel 5 a cam 4], having two studs 42 projecting therefrom t rorgh concentric slots or openings 43 in. said wheel 5, so that when the said wheel 0 has made part of a rotation the ends of the slots 43 come into contact with the studs 42 on the cam 41, and the said. cam is thereby carried permitted th oi the ot the cam 1 2e projection w herenpon nnder action ol" a spring 22 the sector 1.9 is

direction and the del'iaving now particnlarl described and ascertained the natcie ol' m' said invention and in what manner the same is to be perl'ormed, i declare that \\'l7{ll1 I claim is 17 In speed-indica ting apparatrs, the combinationwith continrons -aeting clockwork. ot a shaft having a l'OOi'lFtd wheel and ad apled to be rotated from a re ating part of the apparatl's the speed ot \Yitiii is to be ascertained, a wheel geared to said tootlied wheel and another wheel in frictional cont: said second wheel, a pinion gearing with said other wheel, an indicator-pointer carried there a ratcrit-wheel integral with the said pinion, a detent engaging tlte said ratchet-wlwel to prevent the indicator being rotated, a spring-operated toothed sector carrying t e said dctent, an arbor rotated by the clockwork, a tootlwd wheel looscl mounted thereon and gearing with said toothed sector, a ratcl:et-wheel fast on said arbor, sprin'pa\\'ls carried by said looselymonnted wheel and aring with said ratchc tw licel, a pivoted lci'cr adapted to actuate against its spring, the spring-actnated detent which locks the ratchet and pinion wheels controlling the moven'ient oil the indicator-pointer and means to actnate said lever.

2. 1n speed-indicaringappai tus,the combination with continonsl -acting clockwork of a shall having toothed wheel and adapted to be rotated )in a rotating part of tire ap paratus, t speed of which is to be ascertaine l, a reel geared to said toothed w eel and another wheel in iintienal contact with. said second wheel, a pinion gearing wi .1 said other wheel, an indieator-pointer carried thereby, a ratchet-wh el integral with the said pinion, a detent engaging tl e said atc Let-wheel to prevent indicator being a spring-operated toothed sector id dere it, an arbor rotated by k, a tootled wheel loosely ercon and gearing with said toothed sector, a ratclot-wheel last on said arbor, spring-pawls ca ed by said looselymonntcd wheel and gear mg with said ratchetwheel, a pivoted ever adapted to actuate against its spring, the spring-:wtuated sector and dctent wliicfh lorks the ratchet and pinion wheels ecn :oiling movement of the incheater-pointer, means to actuate said le- '.'t with.

.LIO

ver and means to return the indicatorpointer to its startingpoint.

' 3. In speed-indicatingapparatus,the combination with c ontinuously-acting clockwork, of an indicator, means for conveying thereto motion from. the body, the speed of which is to be indicated,a ratchet-wheel fast to the axis of said indicator, a pivoted toothed sector provided with a detent adapted to engage said ratchet-wheel, a spring tending to bring the said sector into a position in which the said detent engages the said ratchet-wheel, an arbor rotated by the clockwork, a toothed wheel mounted thereon, gearing with said sector and adapted to be turned in one direction independently of the clockwork, means to prevent its rotation in the other direction faster than the clockwork, and means to rotatesaid sector until its detent is out of engagement with the ratchet-w reel.

4. I11 speed-indicating apparatus, the combination with continuously-acting clockwork, of an indicator, means for transmitting thereto motion from a rotary part ofthe apparatus the speed of which is to be ascertained, a detent, lever means for removing said detent, l together with a springactuated toothed sector carrying said detent, an arbor rotated by the clockwork, a toothed wheel loosely mounted on said arbor, and gearing with said sector, a ratchet-wheel fast upon said arbor, spring-pawls carried by said loose wheel and adapted to engage the teeth of said ratchetwheel, said teeth and pawls being arranged to permit the rotation of said loose wheel independent of the said ratchet-wheel on the movement of the sector to disengage the detent, but to oppose its rotation in the opposite direction at a speed faster than that of the ratchet-wheel.

5. In speed-indicating apparatus, the combination with continuously-acting clockwork of a revoluble indicator, a detent, means for removing said detent for a predetermined length of time, and means for transmitting to the indicator motion from a rotating part'ol the apparatus, the speed of which is to be ascertained, said means consisting in a toothed wheel rotated by the apparatus last mentioned, a wheel gearing therewith, a toothed wheel in frictional contact with the latter and a toothed wheel revolving with the indicator and gearing with the wheel adapted to be revolved by frictional contact.

6. In speed-indicating apparatus, the combination with con tinuously-actin g clockwork, of an indicator, a detent, lever means for removing said detent for a predetermined length of time, and means for transmitting to the indicator motion from a rotating part of the apparatus the speed of which is to be ascertained.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

THOMAS WASS FLORY.

Witnesses GILBERT DAVENPORT, H. D. JAMESON. 

